| Abrasion Resistance
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The ability of a tape to resist rubbing or wearing away by friction.
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| Acrylic Adhesive
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PS adhesives base on acrylic polymers. Can be coated as a solvent or emulsion system. Noted for excellent stability in outdoor exposure.
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| Adhere
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To bond; to cause two surfaces to be held together by adhesion.
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| Adhesion
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A measurement of the force required to remove a tape from a substrate.
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| Adhesion Build-Up
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An increase in the peel adhesion value of a pressure-sensitive adhesive tape, after it has been allowed to dwell on the applied surface.
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| Adhesion To Backing
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Bond produced by contact between a pressure-sensitive adhesive and a tape backing when one piece is applied to the back of another piece of the same tape.
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| Adhesive
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Any material that will usefully hold two or more objects together solely by intimate surface contact.
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| Adhesive Transfer
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The transfer of adhesive from its normal position to the surface to which it was attached either during removal or unwind.
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| Application Temperature
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Recommended temperature range at which a pressure-sensitive tape should be applied in order for the tape to perform successfully.
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| Backing
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A relatively thin flexible material to which a pressure-sensitive adhesive is applied.
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| Bleeding
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Penetration through the tape of a coloring liquid (paint, etc) onto the surface to which the tape is applied.
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| Bond
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The adhesion of a pressure-sensitive adhesive tape to the surface to which it has been applied.
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| Bond Strength
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The amount of force required to separate the joined surfaces.
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| Carrier
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Sometimes used to refer to the backing material, particularly in reference to double-face tapes.
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| Chemical Resistance
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Ability of a pressure-sensitive tape to withstand exposure to chemical substances and still perform satisfactorily.
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| Coated Cloth
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Fabric with a rubber or plastic back coating to give increased moisture resistance and longer wear.
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| Coating
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A material, usually liquid, used to form a covering film over a surface. Its function is to decorate and or protect the surface from destructive agents or environment.
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| Cohesion
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The ability of the adhesive to resist splitting. Good cohesion is necessary for clean removal.
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| Cold Flow
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The tendency of a pressure sensitive adhesive to act like a heavy, viscous liquid over long periods of time. Such phenomena as oozing and increased adhesion are the result of this characteristic.
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| Conformability
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The ability of a tape to yield to the contours of a curved or rough surface.
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| Creep
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A slow movement of the adhesive or backing under stress.
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| Creped
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Paper that has small "folds" to provide stretchability and conformability.
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| Cross-Linked
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The development of a three-dimensional structure in an adhesive which is activated by heat.
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| Curling
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The tendency of a tape to curl back on itself when unwound and allowed to hang from the roll.
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| Delamination
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The separation of a material into layers, in a direction approximately parallel to the surface. For instance, a backing separating from an adhesive during unwind.
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| Double Coated
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A pressure-sensitive product consisting of a carrier material with adhesive applied to both sides. The adhesive system on one side of the tape can be different from the adhesive system used on the opposite side.
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| Dwell
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The time during which a PS material remains on a surface before testing for permanence or removability
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| Edge Curl
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The peeling back of lifting of the outer edge of a tape after application.
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| Elastic Memory
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The tendency of a tape backing to attempt to return to it's original length after being stretched or elongated.
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| Elongation
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The distance a tape will stretch lengthwise before breaking.
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| Film
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Uniform, homogeneous, nonfibrous synthetic webs. Common films used in the tape industry include polyethylene, polypropylene, polyester, PVC, etc.
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| Fish Eye
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A small round or oval deformation in an adhesive or coating.
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| Flagging
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A lifting or peeling away of the end of a tape particularly in spiral-wrap applications.
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| Flame Resistance
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The ability of a tape to withstand exposure to a flame. Flame resistant (fire-retardant self extinguishing) materials will burn when exposed to flame, but will not continue to burn after the flame is removed.
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| Flame Retardant
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A material that resists burning when exposed to a flame.
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| Flexibility
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The ability of a tape to be bent or flexed freely.
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| Fluting
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Distortion of a roll of tape in which the layers no longer form a circle.
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| Gapping
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Openings between layers of tape within a roll.
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| Ghosting
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see Offsetting
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| Gloss
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A shiny finish on a smooth surface such as vinyl or paint.
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| Heat Resistance
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The ability of a tape to withstand exposure to specified temperatures after it has been applied to a surface.
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| Holding Power
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Also known as shear adhesion. The ability of a tape to withstand stationary forces (such as weight).
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| Hot Melt
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A pressure-sensitive adhesive applied to the liner or backing in a hot molten form which cools to form a conventional pressure-sensitive adhesive.
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| Impact Resistance
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Also known as shock resistance. The ability of a tape to resist sudden pulls or shocks.
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| Insulation Resistance
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Ability of a tape to resist the flow of electric current across the backing surface.
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| Kraft
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A sulphate wood pulp paper.
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| Lamination
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A combination of two or more similar or dissimilar materials that function as one backing.
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| Lay Flat
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The ability of a tape, once applied, to resist curling or flagging.
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| Legging
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When unwinding or removing a tape from a surface, the appearance of "strings" of adhesive that hold to the original surface, stretch, and then release.
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| Lifting
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A situation where a section of tape has pulled away from the surface to which it was applied.
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| Mass
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Sometimes used as another name for the adhesive.
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| Migration
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The movement over a long period of time of an adhesive ingredient from the adhesive to the application surface.
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| Mils
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Used in describing adhesive coat weights, thickness. The term means thousandths of an inch.
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| Moisture Resistant
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The ability of a tape to withstand exposure to water or moisture and still function properly.
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| Non-Woven
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A manufactured sheet of material composed of directionally or randomly oriented fibers bonded by friction, cohesion, and/or adhesion (excludes paper).
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| Off-Core
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When layers of tape in in correct alignment but the entire roll is not properly aligned with the core.
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| Oozing
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A "squeezing out" of the adhesive from under the backing, occurring when the tape is in roll form, the edges of the roll become tacky.
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| Peel Adhesion
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The force per unit width required to break the bond between a tape and a surface when peeled back (typically at 180° angle at a standard rate).
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| Penetration Resistance
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The ability of a tape to resist slow puncture under pressure.
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| Pinhole
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A very small hole that may permit the passage of light, moisture, or electric current.
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| Polyethylene
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An extruded, tough stretchy film having limited temperature resistance but good moisture barrier properties.
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| Polypropylene
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A polyolefin plastic similar in properties to polyethylene but with higher temperature capability and greater strength.
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| Pressure-Sensitive
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A term commonly used to designate a distinct category of adhesive which, in dry (solvent free) form, is aggressive and permanent or removable at room temperature and adheres to a variety of surfaces without the need of more than the pressure of one's hand. Pressure-sensitive adhesives do not require activation by water, solvent, or heat and has sufficient cohesive strength and elastic nature so that despite its' tack it can be handled with the fingers.
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| Quick Stick
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The property of a pressure-sensitive adhesive that allows it to adhere to a substrate with little more than light pressure.
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| Release Coating
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A coating applied to the outside of the backing to provide easy unwind and prevent delamination or tearing.
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| Release Liner
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A sheet of material covering the adhesive side of the tape. The liner is removed to expose the adhesive prior to application. Common liners used by Covalence Adhesives include polyethylene film, coated paper and kraft stock.
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| Removal
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The act of pulling tape away from the surface to which it has been applied.
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| Residue
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Adhesive left on a substrate when a label is removed.
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| Saturation
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Also referred to as impregnation. Adding materials to the backing material to improve physical properties and resistance to various environmental conditions (such as moisture, solvents, or chemicals). Most commonly used to improve the properties of paper tapes.
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| Self-Wound
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A roll of tape where the adhesive side sticks to the layer of tape preceding it without the use of a release liner.
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| Operating Temperature
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The temperature range in which a tape will perform once it has been applied to a surface.
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| Shear Adhesion
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See Holding Power
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| Single-Faced
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The adhesive is applied to one side of the backing only. Most pressure sensitive tapes are of this type.
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| Slivering
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Defect in which the tape tears or breaks into small pieces during unwind or removal from the application surface.
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| Smoothness
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The relative flatness of the tape backing.
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| Solvent
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A chemical substance capable of dissolving another material; a liquid used to clean adhesive contamination from machine parts.
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| Stain Resistance
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Ability of a tape to not discolor the application surface.
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| Tack
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The degree to which a pressure sensitive adhesive feels sticky or highly adhesive.
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| Telescoping
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A sideways sliding of the tape layers, one over the other, such that the roll looks like a funnel or telescope.
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| Tensile Strength
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The force required to break a piece of tape by pulling on opposite ends of the piece.
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| Thickness
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Distance from one surface of either a tape backing, or adhesive, to the other, usually expressed in mils. This is usually measured under slight pressure with a special gauge.
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| Transfer
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Normally refers to "adhesive transfer." Any tape component which moves from its proper place to some other position during unwind or removal.
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| Twisting
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When a tape has been unwound from the roll and allowed to hang freely, the tendency of the tape to curl around lengthwise.
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| Ultimate Adhesion
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The maximum adhesion available from a pressure-sensitive adhesive, determined by the force necessary to remove a strip of tape from a surface after an extended period of time.
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| Ultra-Violet Resistance (UV)
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The ability of a material to withstand extended exposure to sunlight (ultra-violet) without degradation, hardening or excessive discoloration.
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| Unwind
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The force required to remove tape from the roll.
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| Vinyl or PVC
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Plasticized Poly-Vinyl Chloride. A tough durable plastic film having excellent resistance to oils, chemicals, abrasion, and many solvents.
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| Void
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An uncoated area of either the adhesive or release coating of the tape.
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| Water Absorption
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The measure of the amount of water which will be soaked up by the tape and retained.
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| Weaving
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A poorly wound roll of tape in which the individual layers of tape are not in alignment with the other layers.
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| Wetting
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The ability of an adhesive to flow uniformly over the laminated surface to which it is bonded.
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